Column



M. A. FOUHY.

COLUMN.

APPLICATION FILED JAN. 20, I917.

1,335,104. I Patented Mar. 30, 1920.

WITNESS INVENTOR By ATTURlI/EV MICHAEL A. FOUHY', OF NEW YORK, N. Y.

COLUMN.

Specification of Letters Patent.

. Application filed January 20, 1917. Serial 110 143353.

To all whom it may concern:

Be it known that I, MwnAnL A. Forum.

-a citizen of the United States of America.

and a resident of the borough of Bronx. county of Bronx, city andState-of New York, have invented certain newand useful Improvements inColumns. of which the following is a specification.

My invention relates to improvements in bu lt up hollow colun'ms orpillars and like structural elements. andjcmuprises Improvedconstructions whereby two rows only of rivets or other fastening's arerequired for a tour-sided column or structural element.

My invention also comprises membersoi pecul ar and novel cross-section,adapted for use in the forming of the built-up column hereinafterdescribed. and adapted to be produced readily by rolling or pressingoperations-ot a simple character.

The objects of my invention are to simplify the construction of, andreduce the cost of, bi'lilt-up columns; to that end, to provide a hollowcolumn consisting of shapes adapted to be produced easily by ordinaryrolling operations; which column shall have fiat faces on all sides, allof which.

faces shall be equally accessible for the attachment thereto of beams,braces and other structural elements;- to produce a column having theabove advantages, and which shall be composed of two members only.capable of being secured together by two rows only of rivets or otherfastenings,

I will. now proceed to describe my invention with referencevto theaccompanying drawings, which show cross-sections of built-up columnsembodying my invention. and will then point out the novel features inclaims.

In said drawings:

Referring first to Figure 1: The form oi? column shown in this gure iscomposed of two rolled shapes A, of the general form of angle irons,except that one side of each angle iron is provided with a right angledextension -1 adapted to fit against the inner j 2 of the face of thecomplementary side other angle iron; rivets 3 uniting the two angleirons.

It is also possible to consider these members A as being, not angleirons, but 2 irons,

ported and provided at the ends of 'of the angle with out-turned90-dcgrec wherein one leg of the Z is much shorter than the other. ofcourse the construction is the same. however the elements of that.

structure may be regarded.

In the construct-nan shown in Fig. 2. the column is com )osed of twoangle irons l1 and D of whic I) is a plain angle iron, the sides ofwhich are shown as having some taper. \vhile D is an angle ironsimilarly tnthe sides flanges 9; such out-turned flanges being securedto the sides of angle iron I) by means of rivets 10. v

In the drawings, the members A. l) and l), are shown as luwing sides,the inner and outcrtaccs of which are at a considerable angle one toanother; that is to say. the sections have considerable taper.Thickening of the sections at or near the bases of the angles, suclrasresults from giving the sections such taper, balances what otherwisewould be an eccentrically-placed. areav ot" Patented Mar. 30, 1.920, 7

section; that is to say, the added metal is introduced on the side'orsides of the column opposite the flanges 1. and 9, to counterbalance thearea of the said flanges, thereby increasing the least radius ofgyration of the column. However, notwithstanding this, and theadditional fact that certain methods of rolling shapes require, or arefacilitated by, the said tapered form, I do not limit myself to the saidtapered form of construction, because it may be found prefer able tosacrifice the above advantages in order to make easier certain shoppractices; that is to say, a uniform thickness oi metal in the rolledshapes may in some cases be desirable.

What I claim is:

1. A hollow metal column composed of two angle irons, at least one ofwhich has at the end of one of its le s an out-turned flangesubstantially at rig t angles to said leg and abutting against a legface of the other member, and fastenings extending through such abuttingfaces of-said two members and securing them together.

2. A structural element comprising an angle bar each leg of which isprovided at its extremity with an out-turned flange substantially atright angles to said leg and of a breadth materially less thanthebreadth In testimony whereof I have signed this of either leg of theangle. I specification in the presence of two sub- 3. A structuralelement comprising an scribing witnesses.

tingle bar having'tapering sides, at least MICHAEL A 'FOUHY. 5 one ofthe sides or legs of said an 1e bar Witnesses:

having an out-turned flange substantmlly at y H. M. MARBLE,

right angles to said leg. x PAUL H. FRAiiKE.

